Introducer Sheath Assembly with Hub and Method of Joining a Hub to a Sheath Tube

a technology of hub and sheath tube, which is applied in the field of flexible medical tubing and components, can solve the problems of inherent weakness of tubes, and achieve the effects of strong joint, easy splitting, and inherent weakness
US20090192463A1Active Publication Date: 2009-07-30MEDICAL COMPONENTS INC
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Patent Information

Authority / Receiving Office
US · United States
Patent Type
Applications(United States)
Current Assignee / Owner
MEDICAL COMPONENTS INC
Publication Date
2009-07-30

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Abstract

A tearaway introducer sheath assembly (10) for use in implantation of a catheter into a patient, having an elongated polytetrafluoroethylene sheath tube (12) and a proximal polyethylene hub component (16). The hub comprises two halves (22) insert molded about the sheath tube proximal end and joined to each other by frangible webs (28) enabling manual splitting. At least one pair of opposed holes (42) is formed through the tube proximal end portion 44, and a polyethylene liner (46) is inserted into the tube's proximal end portion. The polyethylene flows into the at least one pair of holes (42) to fuse with the liner, establishing a pair of physical joints (50′) integrally joining the liner (46) to a respective hub half (22). Upon manual splitting of the hub halves, the sheath tube easily splits along its length as a result of a property of the polytetrafluoroethylene material.
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Description

CROSS-REFERENCE TO RELATED APPLICATIONS

[0001] This application claims priority from U.S. Provisional Patent Application Ser. No. 61 / 062,714, filed Jan. 29, 2008.FIELD OF THE INVENTION

[0002] This relates to the field of medical devices, and more particularly to flexible medical tubing and components affixed thereto.BACKGROUND OF THE INVENTION

[0003] Catheters are often used for the delivery and withdrawal of fluids to and from a blood vessel in a patient, respectively. The fluids may be medication that is administered to the patient, or blood that is withdrawn from the patient. The catheter may also be used for hemodialysis, in which blood is withdrawn from the patient, purified and returned simultaneously through respective lumens of the catheter, and much of the catheter remains within the patient's vasculature for an extended period of time for repeated treatments.

[0004] Typically, to insert a catheter into a blood vessel, the blood vessel is located by known methods. An aspirating nee...

Claims

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